Gas-range.



Patented Dec. I9, I899, 0. P. MOON & G. W. GRAVES.

GAS RANGE.

(Application filed July 25, 189B.)

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No. 639,263. Patented Dec. l9, I899. 0. P. MOON & G.'w. GRAVES.

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(Application filed July 25, 1898.)

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(Application filed July 25, 1898.)

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Nrrnn stratus ORVILLE P. MOON, OF LORAIN, OHIO, AND GEORGE IV. GRAVES, OF ROCHESTER, NEW YORK.

GAS-BANG E.

SPECIFICATION forming part of Letters Patent No. 639,263, dated December 19, 1899, Application filed July 25,1898. Serial No. 686,30'7- (No model-l To all whom it may concern.-

Be it known that we, ORVILLE P. MOON, residing at Lorain, in the county of Lorain and State of Ohio, and GEORGE W. GRAVES, residin g at Rochester, inthe county of Monroe and State of New York, citizens of the United States, have invented certain new and useful Improvements in GasRanges; and we do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to improvements in gas-ranges; and the object of the invention is to improve the means for heating the oven in ranges of this kind, so that there is obtained a more direct application and better distribution of the heat than heretofore and the necessary volume of heat is obtained with materially-reduced consumption of gas, all substantially as shown and described, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a perspective elevation of our improved range; and Fig. 2 is a horizontal section thereof, looking down from a line corresponding to 4 4, Fig. 4. Fig. 3 is an enlarged vertical sectional elevation of the range on line 2 2, Fig. 4. Fig. 4 is a vertical sectional elevation of the range on line 3 3, Fig. 3, looking toward the rear of the range.

Although full views of the range are shown in the foregoing figures the invention, in fact, has to do chiefly with the oven and the parts associated therewith, and, as already indicated, the invention is designed to work material economy of gas without reducing the amount of available heat in the oven for baking. This is accomplished by our improved construction of oven, as will now appear, whereby such direct application and diffusion of heat are obtained that there is less waste or loss than heretofore by radiation or conduction or otherwise, and hence less heat need be generated.

The oven, as usual, is in the lower portion of the range and is provided with a speciallyconstructed wall A on its sides and top, the oven-door B occupying the front, as usual. The wall A is composed of inner and outer plates 2 and 3, having an air-space between them, and next to one of said plates, the inner one in this instance, we place a wire mesh 4, and next to this a heavy sheet 5, of asbestos paper or other like non-conduct0r of heat. This construction and lining of the wall make the wall practically proof against loss of heat by radiation and keep the inner plates of the Wall heated to a baking temperature.

Another feature of the oven is the openwork lower shelf O,which is made, preferably, of wire of a suitable size. In the ordinary form of construction heavy absorbent or deflector plates occupy relatively the same position as this open shelf, and therefore require a relatively greater amount of heat to bring them to a baking temperature than the open shelf. A lower open shelf adapted to receive the heat directly instead of indirectly from the burners is rendered possible in our stove by reason of our novel construction and arrangement of burners, whereby perfect combustion of the gas is obtained at the burners, and for which reason the products of combustion are clean and may be brought directly into contact with the contents of the oven. However, provision is also made for directing the flow of the heat upward along the sides of the oven within the same and between the shelf and sides.

It will be seen in Fig. 2 that the burner con sists in this instance of three tubes arranged along both sides and connected at the front, making, in fact, a continuous burner and which may be considered a single element, though for convenience of description is treated in parts. The tubes E are at the sides and tube F at the front, and since these tubes have a continuousline of perforations in their top it is only necessary when the burner is to be lighted to apply a match through the open ing 6 centrally at the front and the flame will instantly travel across both sides. Again, by reason of this continuousness of the burner a single valve 7 serves for the entire burner, and the supply of gas is, as usual, through a suitable mixer 8. This is a great convenience over stoves which have separate burners and a plurality of valves to govern the supply of gas. Naturally by this arrangement there would be a tendency to a greater supply of gas to the farthest tube E; but we overcome this and equalize the flow to both side burners by obstructing to some extent the tube F at its farthest end and also by using a smaller number or size of openings in tube F than in the tubes E. This being done, both sides E of the burner have similar perforations and will work alike.

It will be observed that both side pipes or burners E are located immediately in the bot tom of the oven and that there is no obstruction whatever between them and the two shelves O and D. However, said shelves are su pported apart from the side walls somewhat, as seen in Figs. 3 and 4, on angle-irons 9 or the like, which affords a free circulation of the heat up along the sides of the oven, as already referred to, and the exit from the oven is through a series of holes 10 into the passage 11 at the rear and thence out through flue 12.

Referring now again to the burners E and F, it will be noticed that they are located above a bottom plate 13, which has openings 14 to admit air from below, and that an airchamber 15 is formed between the burners over this bottom or floor with its walls close to the burners and having a free air-supply to the burners through openings 16 in said walls. Then in order that such volume of air may be supplied as will insure the complete combustion of the gas other perforations or openings 17 are formed in the outside wall of the range. By this, also, acirculation of fresh air is maintained while the burners are in operation, which keeps the bottom of the range 0001 and avoids danger of overheating the bottom and setting fire to the floor.

The two side burners E are wholly exposed in the bottom and sides of the oven, so that there is a free upward passage of heat therefrom; but the front burner F has an inclined plate G over it, forining a shield, so that the heat from this burner does not ascend diburner-tube has the double function of a lighter and heater.

\Vhat we claim is- 1. In a gas-range, an oven having a closed top and outlets for the products of combustion therefrom beneath the plane of its top, and a shelf above the plane of said outlets, in combination with a burner extending across the front and along both sides of the oven-bottom, said shelf supported apart from the wall of the oven at its sides to afford a free passage for the heat from the burner over the shelf and thence down through the shelf to the outlet, substantially as described.

2. The oven having a closed top and outlets at its rear below its top, in combination with connected burner tubes located across the front and sides of the oven, and the side tubes exposed in the bottom of the oven, and a shield over the front tube of the burner and discharge-passages at its ends into the oven, whereby the direct and not the radiated heat from the front part of the burner enters the oven, substantially as described.

WVitness our hands to the foregoing specitication this 13th day of June, 1898.

ORVILLE P. MOON. GEORGE V. GRAVES.

W'itnesses:

D. FOSTER FARRAR, EDWARD D. CHAsE. 

